Multilayer Ceramic Component Asymmetric Electrodes Step Height Cracking
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Solution Overview
Problem
The miniaturization of electronic products has led to increased demand for compact, high-capacitance multilayer ceramic components, but the reduction in dielectric and inner electrode thicknesses results in elevated step height influences, causing cracking and discontinuity issues, which deteriorate reliability and connectivity.
Innovation Solution
A multilayer ceramic component design featuring first and second inner electrodes with a difference in printing widths, a difference ratio of 20 to 80%, and an average thickness of 0.6 μm or less, alternately laminated within the ceramic body to reduce step height influence, ensuring continuity of 90% or more and maintaining high capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the thicknesses of dielectric and inner electrode layers are reduced to secure high capacitance, then capacitance is improved, but step height influence is increased causing cracking and discontinuity
Solution Approach 1:
The patent applies asymmetry by making the printing widths of alternating inner electrodes different, with a difference ratio of 20-80%. This asymmetric design creates overlapping regions that bridge step height gaps, preventing cracking and discontinuity while maintaining thin layer thicknesses for high capacitance
Solution Approach 2:
The patent applies local quality by creating regions of different electrode widths within the same structure. The narrower electrodes provide overlap regions that specifically address step height problems at critical locations, while wider electrodes maintain capacitance in other regions
2Shape
If inner electrodes are thinned to reduce step height, then step height influence is reduced, but continuity and connectivity are deteriorated
Solution Approach 1:
By making alternating inner electrodes have different printing widths with a 20-80% difference ratio, the asymmetric design ensures that even when electrodes are thinned, the overlapping regions provide sufficient material volume to maintain continuity and bridge step height variations
Solution Approach 2:
The asymmetric electrode design is built into the structure beforehand, creating built-in overlap regions that proactively compensate for potential discontinuity issues before they occur, ensuring continuity is maintained even with thinned electrodes
Data Source
AI summary
There is provided a multilayer ceramic electronic component, including: a ceramic body including dielectric layers; and first and second inner electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body, the first and second inner electrodes being alternately laminated with a difference in printing widths therebetween, wherein a difference ratio between the printing widths of the first and second inner electrodes is 20 to 80%. According to embodiments of the present invention, a multilayer ceramic electronic component having excellent reliability and withstand voltage characteristics may be realized, by reducing the occurrence of cracking through a reduction in the influence of step height while securing high capacitance.